Chemistry Past Paper Questions

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Q 951:Normally rainwater is weakly acidic because of:
A
SO3 gas
B
CO2 gas
C
SO2 gas
D
NO2 gas
Lahore, 2017
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Q 952:Potassium ferrocyanide K4[Fe(CN)6] is:
A
Acidic salt
B
Basic salt
C
double salt
D
Complex salt
Lahore, 2017
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Q 953:Reactions which have comparable amount of reactants and products at equilibrium state have:
A
Very small Kc value
B
Very large Kc value
C
Moderate Kc value
D
None of these
Lahore, 2017
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Q 954:Specific heat capacity of water is:
A
4.2KJg-1K-1
B
4.2Jg-1K-1
C
2.4Jg-1K-1
D
2.4KJg-1K-1
Lahore, 2017
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Q 955:Swimming pools are cleaned by a process:
A
Hydrogenation
B
Bromination
C
Chlorination
D
Nitration
Lahore, 2017
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Q 956:Temorary hardness of water is due to:
A
Ca(HCO₃)₂
B
CaCO3
C
MgCO₃
D
MgSO₄
Lahore, 2017
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Q 957:The composition of carbon in fuel oil is:
A
C7 to C10
B
C10 to C12
C
C13 to C15
D
C15 to C18
Lahore, 2017
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Q 958:The formula of stearic acid is:
A
C14H31COOH
B
C15H31COOH
C
C16H31COOH
D
C17H35COOH
Lahore, 2017
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Q 959:The general formula of alkanes is:
A
CnH2n+1
B
CnH2n+2
C
CnH2n-1
D
CnH2n-2
Lahore, 2017
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Q 960:The gas with maximum rate of diffusion is:
A
Helium
B
hydrogen
C
fluorine
D
chlorine
Lahore, 2017
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Total MCQs: 1548Page 96 of 155
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